Contact device with a swinging plug for electrical circuits.



No. 861,468. PATENTED JULY so, 1967. w. KREINSBN.

1 CONTACT DEVICE WITH A SWINGING PLUG PCB ELECTRICAL CIRCUITS.

- APPLICATION FILED JUNE 11, 1906.

Wwwm zs: V 4 Q hwwvi'o r: BM. y 4% pulling at the lamps of r'notor' cable.

\"ILHELM KBElNSEN, Ol" llUitBAClLON-THE-SAAR, GERMAN)".

CONTACT DEVICE WITH A SWINGING PLUG FOR ELECTRICAL CIRGJX'IB.

Specification of Letters Patent.

Patented July 30, room Application filed June 11,1906. Serial No. 32 1.190-

To all whom it may concern:

Bo it known that I, WILHELLL Kriemssn. electri ian, :t subject oi the Emperor oi Germany, and a resident of Wilhelmstmsse, in Burbach-on-the-Smtr, Germany, have invented new and useful improvements in Contsct Devices with a Swinging Plug for Electrical Circuits, of which the following is aspocification.

ontoct devices (wall contacts) for electric circuits which allow the plug, inserted in the axial opposite contact of'the contact box, to be inoved up and down 90 are known. By further turning the plug upwards the same however releases itself if pulled the slightest amount I This invention which relates to a. contact 001: and is represented in the accompanying drowirig by sir; different forms of construction, differs from the known deyices iuthat the plug 1' after being inserted (not hung) in the contact box a can f rst of all be swung in the direction oi the en'ows- (Figure 3) to thci riglit hand side and. vice versa through on are of 180 While in constant oontacm witliout' the plug? beings-hie to release itself in a ceiitml position. The coiitact box may hereby be fixed in a vertical or horizoili'al poei tioii'. Such a swingiiig of the plug 'ialways take the some direction w-'WhlCh thelaii o or cable, leading to the place of current consumption is pulled. The object of this construction is to prevent the wiring, the plug or the whole contact boxjrorri being torn off the wall which was often the case with the known contact ovaries when inadvertently violently In order that my invention may understood, 1 have apoendeti hereunto a. Bllobli or? drawings. Q Fig. 1 shows 9, iront'elevation of a contact lioxgiuphpqoing said box-is fitted toawell. Fig. 2 a side sectional eleviition of contact box with pliig in position.

Fig. 3 a ylan of the Figs. 4, 5 and feral different ways otfixing my device to different t ":3 of

contact'boxes.

The contact box a (Fig. 1) is constructed lir this 7 purpose in the; shape of an ovalbox for receiving the separated fuses Aswill be seen in Fig. 1 am? 2 this oval box a is furnished with two suitably shaped projec tionsb amij b, in the arial oppoaite holes of which a. funnel shaped bored contact bolt 0 and 'c is inserted pecting wire e and" e; i plateg which iscon mon to them both, and fixed by -tw'o clamp' springsv hand 'h v I I I The plug iis correapondiugly shaped to the contact in section i1; fig. 2, while'Figgii arid fixedly nieansof the screws d ar d (1. 'Each of these bolts is connected up to o. use f, f by a, com

The cavities for the fuses are closed by ii. closing box a and is shown spiral spring 3, which ,exerts a constant pressure on.

j sure i the funnel shaooil cavities and thuscontsci. l'iosilly the insertion of the plug,

be more clezirli a plan of the sax-inc. Tlhc plug con i of the uppor cap it, and the lower cap 1:, both of which are divided by it pass and dividing plate 1, and kept in an immov- :1 l'Jll: position ,lo Gillll other by the bolt screw in. Scrcwml in El bore of the lower cap k is a. contact bolt n, in which an isolating box (if is insv-rimlw The belt n Si! is further furnished with the small contactplatc g. with the adjusting scrcw q. The upper capsule half '1': also provided with thecontact bolt 72 with the guide pin 7 which projects into the bore of the isolating luv; 0 of the lower capsule k. -I he"bolt n is ciao provider: 3$ with a small contact plate 1)" with, the udjusting screw 1;. ll'l rdcr to press these two contact-bolts n and owith their half roumi'heacls away from"; each otli upper and lower contact bolts n and 'n, is placed 0*.-

Hi9 guide plug.

If the plug 11 is pusher. in between tirecontec-r I c and c of the contact born a, then the cont-act bo l and. nere pressed by the spring a with a constant i twecngrlie contact box a and the plugi is'efiectod;

Siioilld one unintentio ially pull the plug violently then the spring-'8 yields to the corresponding tension incl direction, and the plug i ls forced out oltlie con tact box without damaging fillyPal'tfl. 8i;

In c onsequenceoi the contects of LhefJOBlZfi-Cl; box 2' hevirig; a ring shaped bore, 91nd the contacis of the plug tie curved soil-ace, and said contacts lying Hi: the letter 'ca-ri be turned] on the pin r'to the right hand and left hand 9 side tllgrough arc of or more when the Contact box isjn a. vertical or horizontal position.

7 Besides this herein'oefore mentioned couetmction 9 pl ug coi tact can, while retaining the swinging systc i be so constructed tliat roller shaped cartridge fuses 2m,

ranged parallel to each other in the contact box (Fig,

4) could he instead of the lemellar fuses in Fig"; 5 this arrangement is such that these cartrir as 1113:: for exam ole embedded in an axial direction in ful plug, and pressed up against the small coolact 'Tfil'r'l'lfifi in the contact box by thespimi spring 2 lii rthis con obi-action (see Fig. 443) a is the contact box ill which the contact pie'cesfls are laid, the latter being hold the contect'box by the adjusting scre wN- which also clampthe conducting-wire, Z. i is the plug, in the 7 separate bores of which the roller shaped cartridge fuses with concave heads arepressed up against the contact pieces In by the springs f The arrangement shown in Fig; 51s the opposite: the fuse cartridges s being placed in the contact box which is also the case in Fig. 6. The. contact iuFig. 6 is however effected by'the two springs 1'. which are fixed in the plug and. furnished with concavecontact blocli'n.

Having fully describefi'my invention, what I claim and desire to secure by Letters Patent is:

A contact device for electrlcul conduits comprlalng,

combination, the contact box a, two oppoirltcly arranged Contact bolts or pieces a and 0 in Bald contact box, suld contact pieces having i'uu'nel shaped bores to recelve the concave shaped heads 0! the contact bolts 11-, n :1 spring 8 destined to hold said contact bolts npn'rt, ln order to allow the plug to make a turning movement of 180 correspond lug-to that of the attuchefl cable as well as to permlt the I plug to be automatically relnaed wll'hout damaging any part In the event of a violent pull taking place, substnn' tially as described an i shown and for the purpose set; forth.

ln teailmony whereof I have hereunto set my hum] in thepresonce of two subscribing wlmesscu.

4 WlLI-IELM KRIGINSEN.

Wltnesses Bum-1m 'F. Doxmu Louis VANDURN. 

